Eco-friendly paper manufacturing

Paper manufacturing company Papierfabrik Palm GmbH & Co. KG believes so strongly in Scheuch’s tried-and-tested technology that it has opted for it twice over. The company’s site in Wörth am Rhein started using a Scheuch fabric filter with additive metering to clean the flue gas from a power station back in 2008. As part of a project to modernize and extend the site, the decision was taken to construct another combined heat and power station with a view to utilizing the energy within the waste material left over from production. To assist with this endeavour, Scheuch was once again brought in. The Austrian air pollution control specialist was tasked with installing a fabric filter featuring high-efficiency sorption and a downstream SCR system to ensure compliance with even the strictest of emissions regulations.

Committed to sustainability
All five of the paper manufacturing sites operated by Papierfabrik Palm GmbH & Co. KG in Europe are equipped with flexible, state-of-the-art power stations boasting energy efficiency levels of more than 90 %. Keeping its paper manufacturing sustainable is clearly high on the company’s agenda, and it was this that led it to invest around 200 million euros in modernizing the power stations at its three German sites.

Scheuch is a steady and reliable partner for customers based in the energy industry throughout the world. By using the latest flue gas cleaning processes, the company is once again managing to keep well within the strictest emission limit values while ensuring maximum system availability. A whole host of different technologies are interconnected in a sophisticated way so that dust, acidic flue gas components (HCl, HF, SO₂), dioxins/furans, heavy metals and now NO_x can all be safely separated to achieve the lowest possible emission levels. In this way, modern flue gas cleaning technologies are playing a key role in creating a cleaner environment.

“Compliance with the limit values has always been the top priority within the Palm Group and for this reason flue gas cleaning operations must be absolutely problem-free and reliable. We are pleased to see that the actual emission values being generated at full operation are well below the legal limit values.” (Dr Andreas Haas, Chief of Engineering Management, Papierfabrik Palm GmbH & Co. KG)

SCR technology in waste material combustion
SNCR (selective non-catalytic reduction) technologies for separating dust, acidic flue gas components and nitrogen oxides (NO_x) have been used in power stations for quite some time and constitute the state of the art.

Stricter requirements concerning the NO_x limit value and NH₃ slip are making it necessary to implement additional emission reduction measures. For this reason, the flue gas cleaning system on modern power stations is being supplemented by tail-end SCR (selective catalytic reduction) to ensure that the lower limit values are met. This involves using a catalyst and adding ammonia (N_H3) to convert the nitrogen oxides generated by the combustion process into harmless nitrogen (N₂) and water (H₂O). The SCR technology makes it possible to comply easily with even the lowest NO_x values of ≤ 100 mg/Nm³ while also keeping the NH₃ slip low.

Equipped for the future
This ingenious combined use of a wide variety of processes from Scheuch ensures the lowest emissions and an energy-efficient increase in efficiency thanks to the use of downstream heat recovery. Everyone should be able to count on having a clean planet and fresh air to breathe. Palm and Scheuch are two companies that share this fundamental belief.